Powell, Gay clash in 100m
Former 100m world record holder, Asafa Powell, will have to find something special if he is to get the better of the now fully rehabilitated Tyson Gay, when the two come face-to-face in the 100m at today's Lausanne Diamond League meet.
Gay, the triple World champion in 2007, has made a successful return to the sport, leading the world in both the 100m and 200m after hip surgery in 2011.
Powell, has been working his way back into prime condition after twice suffering injuries and missing out on securing an automatic spot on Jamaica's team to the IAAF World Championships in Athletics in Moscow.
The Jamaican posted a 9.97 win in Ostrava before returning a 10.06 clocking in a rerun shortly afterwards.
Fellow Jamaicans, Moscow-bound Kemar Bailey-Cole and Nickel Ashmeade, are also expected to feature along with American Mike Rodgers and veteran Kim Collins.
Many-time national champion Novlene Williams-Mills, who recently came public about her fight against cancer, will come up against a tough field in the women's 400m, with World champion Amantle Montsho, Natasha Hastings and Francena McCorory.
Women s 400m (1 p.m.): Novlene Williams-Mills
Women s 200m (1:19 p.m.): Patricia Hall
Men s 100m (2:07 p.m.): Asafa Powell
Men's 110m hurdles (2:25 p.m.): Dwight Thomas
Men s 200m (2:33 p.m.): Jason Young and Mario Forsythe